Newtyn Management, LLC 13D and 13G filings for Merrimack Pharmaceuticals, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime |
Transaction Date |
Type | Company Symbol |
Filed By Symbol |
Shares Owned % Owned |
Shares Vs. Prev Report | View |
| 2024-01-25 4:05 pm Purchase |
2023-01-17 | 13D | Merrimack Pharmaceuticals, Inc. MACK |
Newtyn Management, LLC | 1,873,694 13.100% |
354,587 (+23.34%) |
Filing |
| 2020-12-02 2:18 pm Purchase |
2020-11-24 | 13D | Merrimack Pharmaceuticals, Inc. MACK |
Newtyn Management, LLC | 1,519,107 11.400% |
142,227 (+10.33%) |
Filing |
| 2020-07-24 5:42 pm Purchase |
2020-07-22 | 13D | Merrimack Pharmaceuticals, Inc. MACK |
Newtyn Management, LLC | 1,376,880 10.300% |
203,714 (+17.36%) |
Filing |